12461543545 has 16 divisors (see below), whose sum is σ = 16322165568. Its totient is φ = 9058011840.

The previous prime is 12461543533. The next prime is 12461543581. The reversal of 12461543545 is 54534516421.

It is not a de Polignac number, because 12461543545 - 2¹¹ = 12461541497 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12461543498 and 12461543507.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42007 + ... + 163363.

It is an arithmetic number, because the mean of its divisors is an integer number (1020135348).

Almost surely, 2^12461543545 is an apocalyptic number.

It is an amenable number.

12461543545 is a deficient number, since it is larger than the sum of its proper divisors (3860622023).

12461543545 is a wasteful number, since it uses less digits than its factorization.

12461543545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123240.

The product of its digits is 288000, while the sum is 40.

The spelling of 12461543545 in words is "twelve billion, four hundred sixty-one million, five hundred forty-three thousand, five hundred forty-five".